Stop-motion apparatus for use in machines employing conveyed trays or equivalents



Jan. 4 192 513,330

7 w. E. PREscoTT STOP MOTION APPARATUS FOR USE IN MACHINES EMPLOYING CONVEYED TRAYS OR EQUIVALENTS Filed oct. 12, 192s 2 sheets-sheet 1 LQYING CONVEYED J n'. 4 l

a 9277 w. E. PREscoTT STOP MOTION APPARATUS FOR UbE IN MACHINES EMP TRAYS OR EQUIVALENTS v Filed oct. 12. 192s 2 sheets-sheet 2 I J1 1.... 1. r.

m N on m 7 A l. Patented Application tiled October 12g i988,

This invention relates to apparatus or machines in which trays or the like carrying various one used in are caused to which the traysjcontain starch articles or materials are carried along on conveyers, l less chain variety,

or equivalents which forward them along example of such an present invention is for example ofthe endprovided with abutments engage the trays and with the conveyer. An

the confectionery industry in or like powdered material used to provide moulds for receiving ma terial constituting centres for sweetmeats, said trays being caused to pass under a" device by and superfluous which the starch is levelled material strickled ofi.

A disadvantage of machines of this character is that the trays frequently have the ltendency or r1 other to partially lift off the conveyer and tilt de upwards. or sometimes over one anand the object of the invention is to provide means whereby on such lifting or riding occur mediately stopped ring the machinewill be 'imautomatically.

For this purpose tle levellingr device or some similar member under which the trays lightly or fr sage thereun mounted in s pass and with which they will ictionallv engage on their pasder whilst on the conveyer, is uch a manner that it will lightly rest on the trays by gravity for example by being suspended from a suitable-support,

by links so that vshould a tray lift, rise or assume an angular the 'levelling position onthe conveyer or s1m1lar device wlll alsol be swung on its suspension and be caused to rise also elling device invention, suitably in end a roller the other to b This rising movement of the levwill, in one embodiment of the impart movement to a vmember the form of a rod having 'at one bearing on said device and at end adapted to actuate a switch reak a circuit, and stop the machine if electrically driven for example through a rheostat or other suitable arrangement.

The. switch operating member may be provided with means length for proper operation of the switch under varying conditions.

Instead of electrical means being used for controlling the stoppingof the machine in another embodiment this may be effected mechanically throughout for example, by

DWABD rnnscorr, or LoNDoN,

' conrANY INCORPORATED, 0E WHITE PLAINS,

:a UsE IN MACHINES EMPLOYING EeUIvALENrS.

apparatus to which theespecially applicable is chine.

for adjusting its effective.

ENGLAND, AssIcNoE To BAKER-PERRIN NEW Yonx.

Serial'No. 688,219, and in GreatiBrltain Octoberv 27, 1922.

coupling what has been termedthe' switch operating member to a lever or rod system which will release a catch or equivalent and allow spring means or the like tothrow over a belt fork, operate a clutch or actuate or release some other mechanical motion to stop the machine.

Two embodiments-of the invention are il- NT oFFlc E..-

coNvnYEn 'raars on Y lustrated in the accompanying drawings,

Figs. 1 and 2 showing in sectional diagram electricallyoperated means in two positions and Figs. 3 and 4 mechanically operated means,- Fig. 3 being Aa sectional end view and Fig. 4 a'side elevation.v

' To first refer to Figs. 1 and 2, a designates a conveyer chain as used in the mechanism `referred to having raised links or abutments a1 for forwarding the trays., and b'the trays thereon cdesignating 'the levelling or strickling device which as shown is suspended from the framing c1 by links d so that on the tray riding up on the chain .or becoming inclined the levelling device will also rise as shown in Fig. 2. Bearing on the back of the levelling device c is a roller e carried by a rod f slidable in a sleeve g carried by the framing c1 and provided at its upper end with a screw f1 for adjustment purposes. This screw is normally out of contact with the push g1 of any appropriate kind of switch h which is connected by the conductors 71,1 to a coil h2 forming part of a rheostat k3 adapted to control the starting and stopping of the machine to which the invention is applied. In Fig. 1 the switch la* of the rheostat is in position for normal operation of the machine, -but in Fig. 2 the rod f has engaged the pus'h g1 of the switch la, thus breaking the circuit to release the switch h4 and causeA stoppage of the ma- The switch It* is returned to normal as by a suitable spring 7L".

In Figs. 3 and 4 i designates the tray and 7' the levelling or strickling device carried by links jl as previously described. Bearing 011 the upper part of the. levelling device is a rod Il:y provided at the top with a screw k1 for adjusting purposes. ing or lifting as above mentioned the levelling device also rises and t-he rod 7c lifts vone arm Z/of a lever, the other arm Z1 of which is depressedto disengage a rod m under the action of a spring Lm1 and which is in oper- 1 operate a clutch,beltfork or other approvwith machines employingi agate device for stopping the mac ne. e rod m is provided with a. handle m for resetting the s ring when it is desired to refA start the mac ine after a stoppage.

, The spring m1 exerts its ressure upon a suitable lug carried .bi/x t e bar n, and through the medium t ereof reciprocates said bar n to operate thermeans for stopping the machine.

What I claim' as my invention'and desire to secure b'y Letters Patent of the United Statesiskv 1. In a stop-motion mechanism for .use conveyed trays the combination of a level n device adapt-- ed to strickle oi the material 'in -said trays and means for'hringng said inechanism into operatlon :when the levelling devicerises.

2. In a stop-motion mechanism according to claim 1, a roller bearing on the'levelling device and carried by a rod adapted to engage and operate a switch electrically connected to a rheostat adapted to control` the operation of the machine. v l

a' stop-motion mechanism according to claim 1, a rod bearing on the levellin device and adapted to operate means to V a spring-pressedmember in operative connection with a controlling. means for the machine.

In witness whereof I hav specification.w

l signed this 

